Integrating RS technology into a GIS-based earthquake prevention and disaster reduction system for earthquake damage evaluation |
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| Authors: | Ping Li Xiaxin Tao |
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| Institution: | 1. School of Civil Engineering, Harbin Institute of Technology, Harbin 150090, China
2. School of Civil Engineering, Harbin Institute of Technology, Harbin 150090, China;Institute of Engineering Mechanics, China Earthquake Administration, Harbin 150080, China |
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| Abstract: | This paper presents a method to integrate remote sensing (RS) data processing, generation of isoseismal lines and human-computer interaction modules into an improved GIS-based disaster reduction system. Using the RS data processing module, a statistical sample gray value and the RS-intensity at each field survey point in the region are calculated from the probabilistic relationship between the RS-variable and earthquake intensity, and stored in the G1S-based system database. Then, isoseismal lines are generated by a trend surface model from RS-intensity. They are further improved via modification of the isoseismal lines based on the empirical attenuation relationship calculated by using the RS-variable n the human-computer interaction module. The field survey shows that the proposed method gives a good generation of isoseismic lines. As a result, the accuracy of the damage and loss evaluation and the efficiency of the emergency decision making capability are improved. |
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| Keywords: | GIS image processing RS-variable isoseismal lines trend surface CoKriging |
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